>> these are murder simulators. they rehearse the action. >> the extraordinary realism to video games and movies now, et cetera, does cause vulnerable young men, particularly, to be more violent. >> stephen: true, and in a lot of these games they're not just using guns but crowbars, baseball bats, and even chainsaws. that puts frightening ideas in kids' heads. at this point, if i see a teenager coming at me with a chainsaw, i'm sorry, but i cross to the other side of the street. [ laughter ] of course, video game violence is not a new problem. who can forget, in the wake of sim city, how children everywhere took up urban planning? [ laughter ] it was all "tune in, turn on, and zone for residential use!" man! [ laughter ] yes, yes. when talk starts about restricting things, it's never video games or movies. it's always the most innocent amongst us. our guns. why?